Journey of Israel Through The Desert: To Marah
Source: TTT
Exodus 15:23
And when they came to Marah, they could not drink the water there because it was bitter. (That is why it was named Marah.)
Numbers 33:8
They set out from Pi-hahiroth and crossed through the sea, into the wilderness, and they journeyed three days into the Wilderness of Etham and camped at Marah.